Researchers warn this transition isn’t unique to the state. Expert sounds alarm as harmful species spread in US waterways: ...

In Northern California, purple sea urchins are decimating kelp forests. Though the species of urchin causing problems may vary by region, the damage is the same. NNehring/iStock This article is from ...

Scientists have found a delicious solution to an invasive species problem: eating long-spined sea urchins could save Tasmania's kelp forests, Cosmos Magazine reported. Rising ocean temperatures are ...

PORTLAND, Ore. — Sea otters have been missing from the Oregon coast for more than a century, and local non-profit Elakha Alliance is trying to bring them back. The marine mammals, which help protect ...

While the marine heatwaves killing the kelp ecosystem were alarming on their own, the researchers have discovered a new ...

When sea otters were reintroduced along the coastlines of islands in Southern California and British Columbia, researchers saw kelp forests return to areas that were destroyed by sea urchins. But how ...

Purple sea urchins, beware: There’s a purple urchin-eating predator on the horizon — and its name is the sunflower sea star. That’s the plot line coming from a small upstart research facility in Moss ...

The sunflower sea star (Pycnopodia helianthoides) can be found throughout intertidal and subtidal coastal waters of the northeast Pacific Ocean, from Alaska to at least northern Baja California, ...

Researchers examining a century of ocean maps made an exciting discovery linking sea otter populations to kelp forests: Where sea otters thrive, so do these critical underwater habitats. The research ...

A rapid spread of millions of sea urchins is threatening vital kelp forests, which remove pollutants from water.